HKX field-installed Loading Holding Valve (LHV) kits improve excavator performance in lift applications where the load needs to be held for extended periods of time and where extra precision (no load movement) is needed.
Unlike standard hose burst and anti-drift valves, the valves in the HKX LHV kits are designed to give superior load holding capability while providing overload relief and hose burst protection for the boom and arm cylinders.
Each valve holds the actuator (cylinder) in its position without any leakage when the main valve is centered. Therefore, the hydraulic oil cannot be forced out of the cylinder by the cylinder load, preventing cylinder drift. The result is precise control while placing heavy loads. In addition, the valve prevents uncontrolled lowering of the load in the event of a hose failure, ensuring compliance with hose burst requirements of DIN 24093, ISO 8643 and EN 474. This is especially important when loads are being lifted in close proximity to personnel.
The HKX LHV kits, complete with comprehensive illustrated installation instructions, include load holding valves on the two boom cylinders and arm cylinder, and all connecting tubes, hoses, ppc (proportional pilot control) lines and hardware.
BENEFITS
- Superior load holding over standard hose burst and anti-drift valves
- Prevents un-commanded boom and arm movement
- Operator has the ability to control the load after a hydraulic line failure
- Complies with hose burst requirements of standards DIN 24093, ISO 864 and EN 474
- Relief protection against overloads
- Exceptional positive (direct) response to control inputs
- Opening level of the valve is independent from the load pressure.
Complete kit and installation instructions ensure a quick and easy install
